[tor-talk] Can't use TORBirdy to send Email

[tor user22]

Hi All,

Just installed TORBirdy on ThunderBird on FireFox 15.0 and added Yahoo
Email account ,but can't send any email, though receive is OK.when TORBirdy
is disabled everything is fine.
Also another TOR instant is already running(TOR Browser Bundle) to make
TorBirdy work. Is that mandatory?

Any trick or suggestion or somewhere do i make mistake?

Best,